Comparison

StemFox Scientific Calculator vs Camera Data Logger

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

StemFox Scientific Calculator

Streamline complex STEM calculations with a powerful calculator, textbook equation solver, and comprehensive unit converter. Designed for engineers, it reduces busywork and improves accuracy for homework and technical tasks.

Highlights
  • Advanced scientific calculator with 80+ functions
  • Textbook equation solver for any variable
  • Searchable equation database by chapter
  • Fast table lookup with linear interpolation
  • Comprehensive unit converter with 300+ conversions
  • Copy and paste functionality for values and equations
Read full description

Become a better engineer! Stop wasting your time on pointless busy work! Complete your calculations more quickly and accurately. Designed by an engineer, for engineers, StemFox has all the tools you need: Calculator STEM homework is technical and demanding. Accordingly, StemFox includes a calculator able to handle the most complex equations. From trigonometry to Bessel functions, StemFox has you covered! ・More than 80 mathematical functions. ・Quick reference to common basic scientific functions and operators. ・Quickly and easily copy and paste values. ・Quickly reference calculations in all parts of the app. ・Reference previous calculations via the ans(x) method. ・Prettyprint formatting of calculations. Textbook Companions Homework is an important portion of education. Entering equations into your calculator is not. Yet, this tedious error prone activity takes up a significant portion of homework time. Enter StemFox Textbook Companions. Textbook Companions contain references to a textbook’s equations and tables. Equations: ・Equations are referenced by number and name/description. ・Equations are searchable and divided into chapters for quick reference. ・Equations are solvable for any variable. Enter the known variables, and solve for the unknown one. ・Avoid error prone calculator entry. ・Avoid the errors and tedium of entering variables multiple times in the same equation. ・Decreases calculation time by as much as 90% over entering the entire formula yourself! Tables: ・Quickly lookup table values. ・Fast, easy, accurate, table linear interpolation. ・Copy and paste values with a simple tap, no transcription errors! Yay! Unit Converter Unit conversion is a common STEM activity. To speed up this irritating activity, StemFox offers the most comprehensive scientific unit converter available! ・More than two dozen separate units and nearly 300 individual conversions available. ・Tap to copy, tap to paste. SUBSCRIPTION INFORMAITON: • Subscribe on a monthly or annual basis to receive Unlimited Daily Solutions for the duration of the subscription. • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Setting after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription, where applicable. Terms of Use: http://stemfox.io/index.php/eula/ Privacy Policy: http://stemfox.io/index.php/privacy-policy/

About

Camera Data Logger

Features
Read full description

This app allows you to log identified text from the camera feed to a file at a given rate. The file has the date, elapsed time in seconds, and the identified text. It was developed to facilitate data collection in the Chemical Engineering Department at Brigham Young University.

Screenshots

StemFox Scientific Calculator4 screens
Camera Data Logger4 screens

Verdict

The call

The clearest difference is in-app purchases: Camera Data Logger at none against StemFox Scientific Calculator's 6. StemFox Scientific Calculator's advantage is update cadence (every 3 months vs every 8 months) and iOS requirement (15 vs 26.2). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. StemFox Scientific Calculator sells 6 in-app purchases, starting at $2.99 per month. Camera Data Logger asks for nothing beyond the download.

UpkeepUpdate frequency

StemFox Scientific Calculator ships an update every 3 months, Camera Data Logger every 8 months. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
StemFox Scientific Calculator versus Camera Data Logger: the parameters behind the verdict, then further details
ParameterStemFox Scientific CalculatorCamera Data Logger
PriceFreeFree
Rating4.8 (10 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 3 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15 — better26.2
Further details — not scored
Size16 MB1 MB
Age rating4+4+
DeveloperJoshua BrysonClint Guymon

In-app purchases

6 purchases

StemFox Scientific Calculator

Subscriptions2
  • Monthly - Unlimited7 Days trial$2.991 Month
  • Yearly - Unlimited7 Days trial$9.991 Year
One-time4
  • Donut$0.99
  • Drink$2.99
  • Taco$4.99
Show 1 more
  • Pizza$9.99
None

Camera Data Logger

No in-app purchases

Questions

Is StemFox Scientific Calculator free?
StemFox Scientific Calculator is free to download, with in-app purchases available.
Is Camera Data Logger free?
Camera Data Logger is free to download, with no in-app purchases.
Do StemFox Scientific Calculator or Camera Data Logger have ads?
Neither StemFox Scientific Calculator nor Camera Data Logger shows ads.
Which is updated more often, StemFox Scientific Calculator or Camera Data Logger?
StemFox Scientific Calculator ships an update every 3 months, and Camera Data Logger every 8 months. Most recently, StemFox Scientific Calculator was updated on October 10, 2026 and Camera Data Logger on October 4, 2026.

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